Most likely a result Jim Cramer's TheStreet's Stocks Under $10 buy alert. Here is the link:
http://www.thestreet.com/author/1005249/DavidPeltier/all.html
Here is the text:
Buying More Unilife (Stocks Under $10 $)
08/28/15 - 10:04 AM EDT
We'll boost our stake on recent weakness ahead of upcoming results.
Very nice to see buying interest!